From StackOverflow
http://stackoverflow.com/questions/6385888/what-are-some-good-resources-for-studying-hadoops-source-code
Studying Hadoop or MapReduce can be a daunting task if you get your hand dirty at the start.
I followed the schedule as follows :
Start with very basics of MR with code.google.com/edu/parallel/dsd-tutorial.html code.google.com/edu/parallel/mapreduce-tutorial.html
Then go for the first two lectures in www.cs.washington.edu/education/courses/cse490h/08au/lectures.htm A very good course intro to MapReduce and Hadoop.
Read the seminal paper labs.google.com/papers/mapreduce.html and its improvements in the updated version http://www.cs.washington.edu/education/courses/cse490h/08au/readings/communications200801-dl.pdf
Then go for all the other videos in the U.Washington link given above.
Try youtubing the terms Map reduce and hadoop to find videos by ORielly and Google RoundTable for good overview of the future of Hadoop and MapReduce
Then off to the most important videos - Cloudera Videos www.cloudera.com/resources/?media=Video and Google MiniLecture Series code.google.com/edu/submissions/mapreduce-minilecture/listing.htmlAlong with all the Multimedia above we need good written material
Documents:
Architecture diagrams at hadooper.blogspot.com are good to have on your wall
Hadoop: The definitive guide goes more into the nuts and bolts of the whole system where as Hadoop in Action is a good read with lots of teaching examples to learn the concepts of hadoop. Pro Hadoop is not for beginners
pdfs of the documentation from Apache Foundation hadoop.apache.org/common/docs/current/ and hadoop.apache.org/common/docs/stable/ will help you learn as to how model your problem into a MR solution in order to gain the advantages of Hadoop in total.
HDFS paper by Yahoo! Research is also a good read in order to gain in depth knowledge of hadoop
Subscribe to the User Mailing List of Commons, MapReduce and HDFS in order to know problems, solutions and future solutions.
Try the http://developer.yahoo.com/hadoop/tutorial/module1.html link for beginners to expert path to Hadoop
For Any Queries ...Contact Apache, Google, Bing, Yahoo!
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answered Jul 26 '11 at 7:24